Peoplereported earlier today that Michaels had suffered a massive subarachnoid hemorrhage.
The singer was suffering from a headache Thursday night when he was rushed to the hospital.
Michaels is currently in critical condition.

Credit: Jason Merritt/Getty Images
[It] will be touch and go for the next few days while he is under intense observation.
Whether his hemorrhage is related to the appendectomy or his diabetes remains to be seen.
Also:Bret Michaels still in critical condition, according to his official website